<template>
    <div  class="lock-screen-btn-con">
        <Tooltip content="锁屏" placement="bottom">
            <Icon @click.native="lockScreen" :size="24" type="md-lock"></Icon>
        </Tooltip>
    </div>
</template>

<script>
    import Cookies from "js-cookie";

    const setLockBackSize = () => {
        let x = document.body.clientWidth;
        let y = document.body.clientHeight;
        let r = Math.sqrt(x * x + y * y);
        return parseInt(r);
    };
    export default {
        name: "lockScreen",
        props: {
            value: {
                type: Boolean,
                default: false
            }
        },
        methods: {
            lockScreen() {
                let lockScreenBack = document.getElementById("lock_screen_back");
                lockScreenBack.style.transition = "all 3s";
                lockScreenBack.style.zIndex = 10000;
                lockScreenBack.style.boxShadow =
                    "0 0 0 " + this.lockScreenSize + "px #667aa6 inset";
                this.showUnlock = true;
                Cookies.set("last_page_name", this.$route.name); // 本地存储锁屏之前打开的页面以便解锁后打开
                setTimeout(() => {
                    lockScreenBack.style.transition = "all 0s";
                    this.$router.push({
                        name: "locking"
                    });
                }, 800);
                Cookies.set("locking", "1");
            }
        },
        mounted() {
            let lockScreenBack;
            if (!document.getElementById("lock_screen_back")) {
                let lockdiv = document.createElement("div");
                lockdiv.setAttribute("id", "lock_screen_back");
                lockdiv.setAttribute("class", "lock-screen-back");
                document.body.appendChild(lockdiv);
                lockScreenBack = document.getElementById("lock_screen_back");
                window.addEventListener("resize", () => {
                    let size = setLockBackSize();
                    this.lockScreenSize = size;
                    lockScreenBack.style.transition = "all 0s";
                    lockScreenBack.style.width = lockScreenBack.style.height = size + "px";
                });
            } else {
                lockScreenBack = document.getElementById("lock_screen_back");
            }
            let size = setLockBackSize();
            this.lockScreenSize = size;
            lockScreenBack.style.transition = "all 3s";
            lockScreenBack.style.width = lockScreenBack.style.height = size + "px";
        }
    };
</script>

<style lang="less" scoped>
    .lock-screen-btn-con{
        .ivu-tooltip{
            //height: 60px;
            //padding-top: 4px;
            //line-height: 56px !important;
            .ivu-tooltip-rel{

            }
        }
        i{
            cursor: pointer;
        }
    }
</style>
